| Total |
Relative Yield |
Injurya | Nymphsb | |||||
| Variety | June 21 | Aug 24 | 2004 |
2004 | June 21 | Aug 24 | July 30 | Aug 24 |
| Commercial Seed: | ---- Tons Dry Matter/Acre ---- |
% mean |
||||||
| 54H91 | 1.17 | 1.40 | 2.62 | 121 | 2.8 | 1.0 | 0.0 | 0.3 |
| WL 346 LH | 1.08 | 1.28 | 2.44 | 113 | 2.3 | 1.0 | 0.0 | 0.3 |
| Evergreen II | 0.96 | 1.24 | 2.23 | 103 | 2.3 | 1.0 | 0.3 | 0.3 |
| Vernal | 0.77 | 1.13 | 1.82 | 84 | 5.0 | 2.3 | 12.0 | 20.0 |
| 54V54 | 0.63 | 1.01 | 1.59 | 73 | 5.0 | 2.5 | 16.0 | 21.0 |
| Mean | 0.94 | 1.23 | 2.16 | 2.9 | 1.3 | 3.7 | 5.5 | |
| LSD (0.05) | 0.25 | 0.22 | 0.44 | 0.5 | 0.8 | 7.5 | 10.4 | |
| CV % | 18.40 | 12.00 | 13.90 | 11.9 | 39.5 | 136.4 | 128.4 | |
| a Potato leafhopper injury rated from 1= least to 5 = most severe injury. | ||||||||
| b Nymph = Number of potato leafhopper nymphs collected with two pan sweeps. | ||||||||
| * Note: Stand was 100% for all varieties on 9-8-2004. | ||||||||
| Data subjected to Nearest Neighbor AOV, adjusted means reported. | ||||||||
| Establishment: | Seeded with a Hege 3-point hitch drill with presswheels at 16 lb/a. Eptam was applied PPI at 2qt/a. | |||||||
| Plot size: | 4' x 20', 15' alleys and borders. RCBD with four reps. | |||||||
| Soil type and analysis: | Crosby silt loam, pH=7.0, P=78 lbs/a, K=324 lbs/a, CEC=8.4, O.M.=4.3, (10/03). | |||||||
| 2004 Fertilization: | 110 lb/a of 0-46-0 and 135 lb/a of 0-0-60 was applied in April 2004. | |||||||
| 2004 Pest control: | Herbicide applied on15-May for weed control. | |||||||